When a muscle cell contracts, what type of work is being powered by ATP?

A) chemical
B) transport
C) mechanical
D) potential


C

Biology & Microbiology

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A section along the midsagittal plane results in ________ portions of the object

a. anterior and posterior b. dorsal and ventral c. left and right mirror image d. superior and inferior

Biology & Microbiology

Proteins are macromolecules composed of long strings of single units called nucleic acids.

a. true b. false

Biology & Microbiology

Which of the following is a characteristic feature of a carrier protein in a plasma membrane?

A) It exhibits a specificity for a particular type of molecule. B) It requires the expenditure of cellular energy to function. C) It works against diffusion. D) It has no hydrophobic regions.

Biology & Microbiology

Crossing over takes place between sister chromatids during prophase I of meiosis I

Indicate whether the statement is true or false

Biology & Microbiology